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Diodes Incorporated 74LVC3G34SS8-7
- Part No.:
- 74LVC3G34SS8-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-LSSOP, 8-MSOP (0.110", 2.80mm Width)
- Datasheet:
-
74LVC3G34SS8-7.pdf
- Description:
- IC BUF NON-INVERT 5.5V 8SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,965
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Product details
Overview
74LVC3G34SS8-7 from Diodes Incorporated is a triple non-inverting buffer gate in SSOP-8 package, operating from 1.65V to 5.5V supply, with ±24mA output drive at 3.3V, 5.1ns max propagation delay at 3.3V/125°C, and IOFF-enabled partial power-down protection. It serves as a level-shifting signal conditioner in mixed-voltage I/O interfaces of portable computing and consumer electronics.
For engineers reviewing the 74LVC3G34SS8-7 datasheet, 74LVC3G34SS8-7 pinout, 74LVC3G34SS8-7 application, or 74LVC3G34SS8-7 equivalent, key selection criteria include VCC range compatibility, 5.5V-tolerant inputs, IOFF leakage (<±10μA), output drive strength across voltage rails, and thermal resistance (ϴJA = 130°C/W) for compact board layouts.
Technical Context
This device implements three independent CMOS buffer stages with push-pull outputs and no internal inversion. Each channel supports rail-to-rail input voltage tolerance up to 5.5V independent of VCC, enabling seamless interfacing between 1.8V, 2.5V, 3.3V, and 5V logic domains.
The IOFF circuit actively disables outputs during power-down by disconnecting internal paths when VCC = 0V, limiting back-current to <±10μA and preventing bus contention in hot-swap or partial-power-down systems. Propagation delay remains stable across -40°C to +125°C at ≤5.1ns (3.3V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65V to 5.5V - supports single-supply operation across 1.8V/2.5V/3.3V/5V systems without level translators |
| Input Voltage Tolerance | Up to 5.5V - enables direct connection to higher-voltage buses while powered from lower VCC |
| IOFF Leakage | ±10μA max - prevents damaging current flow during partial power-down or hot insertion |
| tPD (Max) | 5.1ns at 3.3V, -40°C to +125°C - ensures timing-critical signal buffering in high-speed digital control paths |
| Output Drive | ±24mA at 3.3V - drives moderate capacitive loads (e.g., 2–3 fan-outs of LVC logic) without external buffers |
| ESD Rating | 2kV HBM, 1kV CDM - meets industrial-grade robustness requirements for board-level handling and operation |
| Operating Temp | -40°C to +125°C - qualified for extended-temperature embedded and automotive-adjacent applications |
Pinout & Package
Supplied in SSOP-8 (Shrink Small Outline Package) with 0.65mm lead pitch, 2.95mm × 4.00mm body, and exposed pad-less construction. Thermal resistance ϴJA = 130°C/W on JEDEC 2s2p FR-4 board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A, 2A, 3A | Independent Data Inputs | Three logic-level inputs accepting 5.5V-tolerant signals regardless of VCC setting |
| 1Y, 2Y, 3Y | Buffered Non-Inverting Outputs | Push-pull outputs replicating input state with full rail-swing and ±24mA drive capability |
| VCC | Supply Voltage Input | Single power rail for all three buffers; powers internal logic and output stages |
| GND | Ground Reference | Common return path for supply current and signal reference; must be low-impedance |
Key Features
| Feature | Design Value |
|---|---|
| Wide VCC Range | 1.65V–5.5V operation enables use across legacy and modern low-voltage logic families without redesign |
| 5.5V-Tolerant Inputs | Eliminates need for external level shifters when interfacing 5V peripherals to 3.3V or 1.8V controllers |
| IOFF Partial Power-Down | Prevents backflow current during VCC ramp-down or removal-critical for PCIe, USB, and hot-plug subsystems |
| Low Dynamic Power | 19pF typical CPD at 3.3V/10MHz - reduces switching noise and system-level power budget impact |
| Industrial Temp Range | -40°C to +125°C operation supports deployment in enclosed, thermally constrained environments |
Applications
| PC & Notebook I/O Expansion | USB Peripheral Signal Conditioning |
|---|---|
Use Scenario: Isolating and buffering GPIO lines between SoC and multi-voltage peripheral headers in ultrabooks. IC Role / Device Role / Timing Role: Level-shifting buffer ensuring clean 3.3V logic transmission to 5V-compatible card readers and HDMI CEC lines. Use Value: Eliminates cross-rail contention during sleep/wake transitions via IOFF, reducing firmware complexity and improving reliability. | Use Scenario: Driving USB 2.0 upstream data lines from a 1.8V microcontroller to a 3.3V USB transceiver. IC Role / Device Role / Timing Role: Non-inverting signal repeater with sub-5ns delay, preserving signal integrity across voltage domain boundaries. Use Value: Maintains USB packet timing margins while supporting mixed-supply USB host designs without discrete FET translators. |
| HDD/SSD SATA Control Interface | Set-Top Box IR & Front Panel Logic |
Use Scenario: Buffering SATA LED activity and reset signals between 1.2V NVMe controller and 3.3V status LEDs/switches. IC Role / Device Role / Timing Role: Low-power, rail-flexible buffer isolating sensitive storage controller I/O from noisy panel circuits. Use Value: Prevents latch-up risk during drive hot-swap using IOFF, and withstands 5.5V ESD events near external connectors. | Use Scenario: Translating front-panel button presses and IR receiver outputs into clean 3.3V logic for media processor GPIOs. IC Role / Device Role / Timing Role: General-purpose buffer providing noise immunity and voltage translation for user interface signals. Use Value: Enables direct connection of 5V-tolerant mechanical switches and photodiode receivers without pull-up resistors or clamping diodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC3G34DCUR | VSSOP-8 package (smaller footprint, ϴJA = 155°C/W); identical electrical specs and pinout | Better suited for space-constrained PCBs where thermal margin allows higher ϴJA | Select when board area is critical and ambient temperature stays below 85°C |
| 74AUP3G34GS | Lower ICC (max 0.5μA vs. 10μA), slower tPD (max 11.2ns at 3.3V), same VCC range and IOFF | Optimized for ultra-low static power in battery-backed always-on monitoring circuits | Select only when nanosecond-level timing is not required and quiescent current dominates design priority |
Compared with SN74LVC3G34DCUR, the 74LVC3G34SS8-7 offers lower thermal resistance for higher ambient operation; compared with 74AUP3G34GS, it delivers tighter timing control at the cost of slightly higher static current-making it optimal for performance-driven mixed-voltage signal routing.
Availability
74LVC3G34SS8-7 is available at Aetrix Electronics and suitable for PC motherboard I/O expansion, USB peripheral interface design, and HDD/SSD control logic requiring stable component supply and guaranteed long-term sourcing.
Supply support for 74LVC3G34SS8-7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability, industry-qualified components for computing, industrial, and consumer markets.
The 74LVC3G34 belongs to Diodes' LVC logic family-designed specifically for low-voltage, mixed-rail digital interfacing with robust ESD, wide temperature operation, and partial power-down safety.
FAQ
Can 74LVC3G34SS8-7 operate with VCC = 1.5V?
No. The recommended minimum VCC is 1.65V per datasheet Section 6. At 1.5V, output drive strength drops below specification, VOH fails to meet logic-high thresholds, and timing parameters become invalid. Operation below 1.65V may result in metastability or excessive ICC.
Does this device support hot-swap insertion into a live 5V bus?
Yes-when VCC = 0V, the IOFF feature limits output leakage to ±10μA, preventing back-current into powered downstream circuits. However, inputs remain 5.5V-tolerant, so the device can safely accept live 5V signals before VCC ramps, provided GND is established first.
What is the maximum capacitive load this buffer can drive reliably?
Based on output drive specs (±24mA at 3.3V) and typical CPD = 19pF, the device reliably drives ≤30pF total load (including trace and input capacitance) while maintaining ≤5.1ns tPD and clean edges. For >30pF, add series termination or reduce edge rate via input RC filtering.
Is the SSOP-8 package RoHS and halogen-free?
Yes. Per datasheet Notes 1–3, the 74LVC3G34SS8-7 is fully RoHS 3 compliant (2015/863/EU), lead-free, and halogen-free (<900ppm Br, <900ppm Cl, <1000ppm Sb), certified as a "Green" device by Diodes Incorporated.
74LVC3G34SS8-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- 74LVC
- Package/Case:
- 8-LSSOP, 8-MSOP (0.110", 2.80mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Input Type:
- -
- Output Type:
- -
- Current - Output High, Low:
- 32mA, 32mA
- Voltage - Supply:
- 1.65V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SSOP
74LVC3G34SS8-7 FAQ
1.How can I place an order for 74LVC3G34SS8-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC3G34SS8-7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 74LVC3G34SS8-7 reliable?
The price and inventory of 74LVC3G34SS8-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC3G34SS8-7 is usually 5 days.
3.What payment methods are accepted for 74LVC3G34SS8-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC3G34SS8-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC3G34SS8-7?
74LVC3G34SS8-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC3G34SS8-7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 74LVC3G34SS8-7?
For technical support, including 74LVC3G34SS8-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC3G34SS8-7 requirements.
6.How does Aetrix verify that 74LVC3G34SS8-7 is sourced from the original manufacturer or authorized distributors?
All 74LVC3G34SS8-7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 74LVC3G34SS8-7 meets industry standards.
7.What is the process for return or replacement of 74LVC3G34SS8-7?
All 74LVC3G34SS8-7 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC3G34SS8-7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 74LVC3G34SS8-7 part is unused and in its original packaging.
Return procedure for 74LVC3G34SS8-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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